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Chapter 4 Knowledge Representation (continue) 323-670 Artificial Intelligence ดร.วิภาดา เวทย์ ประสิทธิ์ ภาควิชาวิทยาการคอมพิวเตอร์ คณะวิทยาศาสตร์ มหาวิทยาลัยสงขลานครินทร์ Property Inheritance 323-670 Artificial Intelligence Lecture 14 Page 2 Frame Baseball-Player isa : Adult-Male bats: (EQUAL handed) height: 6-1 batting-average: .252 figure 4.7 Inferential Knowledge figure 4.7 323-670 Artificial Intelligence Lecture 14 Page 3 Procedural Knowledge as Rules similar to figure 4.7 323-670 Artificial Intelligence Lecture 14 Page 4 Redundant Representation John punched Mary Mary punched John 323-670 Artificial Intelligence Lecture 14 Page 5 Similarity Net liking among set of frame 323-670 Artificial Intelligence Lecture 14 Page 6 Knowledge Representation important attribute : isa and instance relationship among attributes at what level of detail should the world be represented? Mary is Sue’s cousin. เมรี่ เป็ นหลานของซู Mary = daughter(brother(mother(Sue))) Mary = daughter(sister(mother(Sue))) Mary = daughter(brother(father(Sue))) Mary = daughter(sister(father(Sue))) Mary = daughter(sibling(parent(Sue))) 323-670 Artificial Intelligence Lecture 14 Page 7 Knowledge Representation John broke the window Sequence ? ...... pick up hard object , Hurl the object to the window Cause hand / foot to move fast and crash into the window Shut the window so hard that the glass breaks Finding the right structure John went to Sizzer last night. He ordered a large rare steak, paid his bill, and left. Did john eat dinner last night? John flew to New York. John flew a kite. John flew down the street. 323-670 Artificial Intelligence Lecture 14 Page 8 Frame Problem on(plan12,table34), under(table34, window13), and in(table34,room15) : the facts may change run out of memory : when description is very long above(ceiling, floor) : this fact never change 323-670 Artificial Intelligence Lecture 14 Page 9 End Chapter 4 Will Rogers 323-670 Artificial Intelligence Lecture 14 Page 10